Pearson UI Developer Interview Questions and Answers for Experienced

Q1. Coding question: Given a sorted array of numbers. All numbers have freq of 2 in array except one number. Find that number with T.C of logn
Ans. 
Find the single number in a sorted array with frequency of 2 for all other numbers.
• Use binary search to find the number with different frequency.

• Check if the mid element is at even or odd index to determine which side to search next.

• Example: Input array [1, 1, 2, 2, 3, 3, 4, 4, 5] should return 5.
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Q2. Print left view of tree
Ans. 
Print the left view of a tree by traversing the tree from left to right at each level
• Traverse the tree using level order traversal

• Print the first node at each level encountered during traversal
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Q1. Detailed discussion on projects
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Q2. Questions on O.S like about deadlocks,etc..
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Good with easy questions

Q1. Questions around my projects
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Q1. Salary discussion round with HR
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Q1. Basic questions for ADF
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Q1. Basic HR round for CTC and notice period
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Q1. Questions on HTML & advance SCSS (functions)
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Q2. Questions on Bootstrap, Javascript, Vue Js
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Q1. Will ask about your educational and experience details
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Q1. One technical round will ask some related question - no particle test in my case
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Q2. Asked about HTML5 and CSS3 - semantic elements and other new features
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Q3. Jquery and javascript question
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Q4. What is Sass and why do we use this. benefits of using SASS.
Ans. 
Sass is a preprocessor scripting language that is interpreted or compiled into Cascading Style Sheets (CSS).
• Sass allows for variables, nesting, and mixins, making CSS code more maintainable and DRY.

• It provides features like inheritance, functions, and loops, which help in writing cleaner and more organized stylesheets.

• Sass also supports modular and reusable code, improving development efficiency and scalability.

• By usin...read more
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They took one technical round with html, css, javascript questions only for 20 minute

Q1. HR discuss salary and negotiate with you smartly
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Q1. Explain angular life cycle hook
Ans. 
Angular life cycle hooks are methods that allow you to tap into specific points in a component's life cycle.
• ngOnChanges: Called when an input property changes

• ngOnInit: Called once after the component is initialized

• ngOnDestroy: Called before the component is destroyed

• ngAfterViewInit: Called after the component's view has been initialized
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